NL8005509A - Magnetische stromingsmeter met een meertrapsversterker met automatische nulterugstelling. - Google Patents

Magnetische stromingsmeter met een meertrapsversterker met automatische nulterugstelling. Download PDF

Info

Publication number
NL8005509A
NL8005509A NL8005509A NL8005509A NL8005509A NL 8005509 A NL8005509 A NL 8005509A NL 8005509 A NL8005509 A NL 8005509A NL 8005509 A NL8005509 A NL 8005509A NL 8005509 A NL8005509 A NL 8005509A
Authority
NL
Netherlands
Prior art keywords
amplifier
zero
zero reset
switching
reset circuit
Prior art date
Application number
NL8005509A
Other languages
English (en)
Dutch (nl)
Original Assignee
Emerson Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Emerson Electric Co filed Critical Emerson Electric Co
Publication of NL8005509A publication Critical patent/NL8005509A/nl

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
    • G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
    • G01F1/60—Circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
NL8005509A 1979-10-09 1980-10-06 Magnetische stromingsmeter met een meertrapsversterker met automatische nulterugstelling. NL8005509A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/082,762 US4262543A (en) 1979-10-09 1979-10-09 Magnetic flowmeter having multiple stage amplifier with automatic zeroing
US8276279 1979-10-09

Publications (1)

Publication Number Publication Date
NL8005509A true NL8005509A (nl) 1981-04-13

Family

ID=22173290

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8005509A NL8005509A (nl) 1979-10-09 1980-10-06 Magnetische stromingsmeter met een meertrapsversterker met automatische nulterugstelling.

Country Status (5)

Country Link
US (1) US4262543A (bs)
JP (1) JPS5661613A (bs)
DE (1) DE3037173A1 (bs)
FR (1) FR2467390B1 (bs)
NL (1) NL8005509A (bs)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5830623A (ja) * 1981-08-14 1983-02-23 Aichi Tokei Denki Co Ltd 電磁流量計
US4741215A (en) * 1985-07-03 1988-05-03 Rosemount Inc. Flow tube for a magnetic flowmeter
US4928059A (en) * 1989-05-01 1990-05-22 Rockwell International Corporation Sinusoidal current sense and scaling circuit
US5210502A (en) * 1992-01-12 1993-05-11 Sony Corporation Of America Servo distortion trim for DBX VCA
US5563587A (en) * 1994-03-21 1996-10-08 Rosemount Inc. Current cancellation circuit
DE19621132A1 (de) * 1996-05-24 1997-11-27 Bailey Fischer & Porter Gmbh Verfahren und Vorrichtung zur magnetisch-induktiven Durchflußmessung
US6300824B1 (en) * 1999-03-09 2001-10-09 Conexant Systems, Inc. Analog offset cancellation method and circuit and amplifier using such circuit
US7073393B2 (en) * 2004-11-01 2006-07-11 Rosemount Inc. Magnetic flowmeter with built-in simulator
US7353119B2 (en) * 2006-03-14 2008-04-01 Rosemount Inc. Reduced noise sensitivity in magnetic flowmeter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5034853A (bs) * 1973-07-31 1975-04-03
US3903875A (en) * 1974-01-24 1975-09-09 Sandoz Ag Automatically calibrated respiratory ventilation monitor
DE2410407C3 (de) * 1974-03-05 1981-05-21 Fa. Ludwig Krohne, 4100 Duisburg Verfahren zur Kompensation der elektrochemischen Störgleichspannung bei der induktiven Durchflußmessung mit periodisch zwischen zwei Induktionswerten hin- und hergeschaltetem Gleichfeld
DE2744845C3 (de) * 1977-10-05 1985-08-08 Flowtec AG, Reinach, Basel Verfahren zur Kompensation der elektrochemischen Störgleichspannung bei der magnetisch-induktiven Durchflußmessung mit periodisch umgepoltem magnetischem Gleichfeld

Also Published As

Publication number Publication date
US4262543A (en) 1981-04-21
FR2467390A1 (fr) 1981-04-17
DE3037173C2 (bs) 1987-02-05
FR2467390B1 (fr) 1986-03-07
JPS5661613A (en) 1981-05-27
DE3037173A1 (de) 1981-04-23

Similar Documents

Publication Publication Date Title
US5543717A (en) Integrable conductivity measuring device
US4446410A (en) Control circuit for a solenoid-operated actuator
NL8005509A (nl) Magnetische stromingsmeter met een meertrapsversterker met automatische nulterugstelling.
KR950026073A (ko) 지락전류로부터 추출된 직류성분에 의하여 지락을 검출하는 계자지락 검출기 및 계자지락계전기
US3735274A (en) Thermocouple signal amplifier
JPH11122954A (ja) ブリッジ段を通してｐｗｍ駆動される誘導負荷中の電流を監視する方法およびそのシステム
KR920012926A (ko) 유도성 근접 센서
SE8105806L (sv) Forfarande och anordning for kompensation av storlikspenningar i elektrodkretsen vid magnetisk-induktiv genomstromningsmetning
GB1461725A (en) Method and apparatus for testing dc motors
US4717869A (en) Controlled current source apparatus for signals of either polarity
JPH05180661A (ja) センサ信号抽出回路
US3895305A (en) Clamp circuits
JP5297408B2 (ja) 電磁弁の制御装置
EP0022524A1 (en) Sensor-integrator system
JPH0258569B2 (bs)
JPS6170154A (ja) 部品の動きを検知する変換器手段
NL8005510A (nl) Magnetische stromingsmeter met ultrasonisch gereinigde elektroden.
JPS57157878A (en) System of driving solenoid-operated proportional flow control valve
KR840006108A (ko) 아날로그형 신호-펄스형 신호변환장치
JPS62211563A (ja) 電流検出装置
US3514632A (en) Programmable sawtooth waveform generator
JPS5529037A (en) Drive-controlling method for solenoid pump
SU551705A1 (ru) Аналоговое запоминающее устройство
SU283359A1 (ru) Нелинейное корректирующее устройство
SU538371A1 (ru) Широтно-импульсный операционный усилитель

Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
A85 Still pending on 85-01-01
BC A request for examination has been filed
BV The patent application has lapsed